Gen2 Extended Remote System (GERS)Introduction
The Gen2 Extended Remote System (GERS) is a software package that you can install todisplay all eight of Subaru’s Observation Control System displays, which will be helpful for you
to monitor the status of observations from your home or office. Usually, it is sufficient to show
only a subset of the most important displays; your Support Astronomer (SA) can explain which
ones will be the most useful for your observation. The internal tests by our staff showed that itis very portable, speedy, and efficient. Currently, we are glad to provide this as a beta service
for your observational convenience. The GERS (alias g2remote) software is available with amild 'shared-risk' mode. For your observations, we recommend connecting to the SA orOperator via Zoom for communication and using GERS to monitor the observation status. If
you do not plan to use the Mitaka remote observation room in Japan, or if one of your teammembers will participate in Zoom only, then we recommend you or your participants use theGERS system.

Policies
The maximum number of simultaneous GERS observers is two (maximum of twoconnections). If you want to see the GERS screen in three or more places, we recommend
sharing the GERS screen(s) with Zoom’s screen sharing function.

Procedures
For Open-Use Observers
1. PI should notify the observer’s information via the Google form at least three weeks prior
to the observation.
2. Once you receive an email that your observation with GERS has been accepted, you can
install GERS and follow the procedures for the GERS self-service web site (describedbelow).

For non-Open-Use Observers
Please contact gers-infodesk.org to apply for GERS observation.
Note: GERS should be prepared at least two weeks prior to the observation date. We may
not be able to accommodate last minute GERS observation requests less than 3 days prior
to the observation date, even if it is unavoidable.

Requirements & Installation
Please refer to the following links for the latest versions of the operation.md(operation_jp.md) and install.md (install_jp.md) files.
https://github.com/naojsoft/g2remote/blob/master/README.md

For First-time GERS users
Please visit the web site <https://github.com/naojsoft/g2remote> where you can download
the software and follow the instructions in the "install" and "operation" files. Follow theinstructions and upload the newly generated public key (".pub" version only) using the GERS
self-service web site (see details below). Keep both the public and private key files safe in a
separate empty folder. From the self-service site, download the necessary configuration
files to use with GERS; unzip these into the same folder as the public/private key pair.
1. Download and install the ‘g2remote’ program.
2. Generate a SSH keypair; upload the ‘gen2_connect.pub’ (public part file) to the selfservice site.
3. Download the configuration files from the self-service site.
4. Read the documentation, including the FAQ and troubleshooting sections.
5. Connection Test on the day of observation
6. Observation

For Repeat GERS users●Keep your GERS private/public keypair safe. It can be used over and over for future
GERS observations with Subaru Telescope. You should not need to ever upload anew key unless you lose the old one, or we ask you to. In that case, generate a newkeypair as described in the instructions and upload the public part to the GERS selfservice web site.

●Although you do not need to upload a new key, the configuration files change fromsemester to semester and will need to be downloaded and unzipped into the folder
with your keypair at the beginning of each semester. These should be downloaded
from the GERS self-service web site.

●If you would like to use GERS in the same semester, you are able to use the sameconfig file. You can use the program exactly as before. In that case, simply send us
an email requesting to use GERS (as described above under “Procedures”)..

The GERS Self-Service Web Site
The GERS self-service web site is used to upload the public (“.pub” file) of your SSH key
pair that you will generate in the instructions. You will also download the configuration files
for your GERS use from the site.
You will be emailed an initial password to be used to login to the self-service web site (theuser name is your email address). After logging in, please change your password, upload
your public key, and download your configuration files.
If you have trouble using the self-service web site, you may email us the public part of theSSH keypair and we will upload it for you and send you the configuration files. As thisnecessitates some delays, we recommend that you become comfortable using the selfservice site, as it is more speedy and convenient for everyone involved. If you forget yourpassword, email us and we will reset it for you; after receiving the reset password, pleaselogin and change it.

Additional information for GERS users●●●Testing can be done anytime between 10:30 and 17:00 HST on the day of theobservation.
GERS users in the 1st half night should disconnect 5 minutes before the switchingtime, and for those in the 2nd half night should connect 5 minutes after the switchingtime.
The observers of the 2nd half night program:○ Do not connect GERS before the switching time.
○ Firstly, connect with Zoom before switching time and check with the SA orOperator that the observers of the 1st half program have disconnected theirGERS connection.

Zoom Information
A zoom connection is necessary for communication with the operation staff members(Operators and SAs) but also with your other observers. GERS shows the Gen2 displays formonitoring of your observations but does not provide communication tools. The Zoom ID andpassword to be used on the day will be provided in advance via email. The policy regarding
the use of Zoom for the observation is as follows.
https://www.naoj.org/Observing/Proposals/Visit/zoom_policy.html

Contact
If you have any questions about GERS and Zoom system, please contact gersinfodesk@naoj.org.